Melatonin Counteracts Drought Induced Oxidative Damage and Stimulates Growth, Productivity and Fruit Quality Properties of Tomato Plants.
Melatonin Counteracts Drought Induced Oxidative Damage and Stimulates Growth, Productivity and Fruit Quality Properties of Tomato Plants.
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褪黑素可抵消干旱引起的氧化损伤，并促进番茄植株的生长、生产力和果实品质特性。
DOI：
10.3390/plants9101276
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发表时间：
2020-09-28
期刊：
影响因子：
--
通讯作者：
El-Gawad HGA
中科院分区：
文献类型：
--
作者：
Ibrahim MFM;Elbar OHA;Farag R;Hikal M;El-Kelish A;El-Yazied AA;Alkahtani J;El-Gawad HGA
褪黑素“n -乙酰-5-甲氧基色胺”（MT）是近年来被认为具有多种生理功能的植物生长调节剂。虽然许多研究已经证实外源施用mt可以缓解许多植物物种干旱胁迫的有害影响，但这些研究大多只针对种子、幼苗和幼嫩植物的生命周期中的一小段时间。因此，在不利的露天条件下，利用MT作为一种潜在的有前途的农业叶面应用来提高作物生产力和质量的知识仍然不足。在本研究中，我们研究了在0、20和40 ppm浓度下，MT作为叶面施用对长期处于最佳和亏缺灌溉条件下的露天番茄植株的影响。结果表明，外源MT显著提高了植株生长、叶绿素含量和抗坏血酸过氧化物酶（APX）、过氧化氢酶（CAT）、过氧化物酶（POX）等抗氧化酶活性。这种改善与脯氨酸和可溶性糖的显著减少有关。此外，mt通过降低细胞中有毒物质如H2O2和丙二醛（MDA）的含量，作为抗氧化损伤的保护剂。同样，经mt处理的植株在总可溶性固形物（TSS）、抗坏血酸和番茄红素等品质性状改善的同时，也显示出更高的总产量。总的来说，在水分充足（13.7%）和亏水（37.4%）条件下，20 ppm MT处理的显著产量最高。这些结果表明，外源MT在提高番茄对亏水的耐受性方面发挥了重要作用，可以推荐为在这种条件下有前景的农业处理。
Melatonin “N-Acetyl-5-methoxytryptamine” (MT) has recently been considered as a new plant growth regulator with multiple physiological functions. Although many previous studies have confirmed that exogenous applied-MT can alleviate the deleterious effects of drought stress in many plant species, most of these studies were exclusive on seeds, seedlings, and young plants for a short period of their life cycles. Therefore, the knowledge of using MT as a potential promising agricultural foliar application to improve crop productivity and quality is still insufficient under adverse open field conditions. In this study, we investigated the effect of MT as a foliar application at 0, 20, and 40 ppm on tomato plants that were grown in the open field under the long term of optimal and deficit irrigation conditions. The results indicated that exogenous MT significantly enhanced plant growth, chlorophyll and activities of antioxidant enzymes, including ascorbate peroxidase (APX), catalase (CAT), and peroxidase (POX). This improvement was associated with a marked reduction in proline and soluble sugars. In addition, applied-MT worked as a protective agent against oxidative damage by reducing the cellular content of toxic substances such as H2O2 and malondialdehyde (MDA). Similarly, MT-treated plants showed greater total fruit yield with improving its quality attributes like total soluble solids (TSS), ascorbic acid, and lycopene. Generally, the highest significant fruit yield either under well-watered (13.7%) or water deficit (37.4%) conditions was achieved by the treatment of 20 ppm MT. These results indicate that exogenous MT played an essential role in enhancing tomato tolerance to deficit irrigation and could be recommended as a promising agricultural treatment under such conditions.
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影响因子：
4.5
作者：
Buttar, Zeeshan Ali;Wu, Sheng Nan;Wang, Chengshe
通讯作者：
Wang, Chengshe
影响因子：
10.3
作者：
Arnao, M. B.;Hernandez-Ruiz, J.
通讯作者：
Hernandez-Ruiz, J.
DOI：
10.3390/molecules23071605
发表时间：
2018-07-02
期刊：
Molecules (Basel, Switzerland)
影响因子：
--
作者：
Ding F;Wang G;Wang M;Zhang S
通讯作者：
Zhang S
影响因子：
5.5
作者：
Alhaithloul, Haifa A.;Soliman, Mona H.;Elkelish, Amr
通讯作者：
Elkelish, Amr
影响因子：
4.5
作者：
ElSayed, Abdelaleim, I;Boulila, Moncef;Omar, Ahmad A.
通讯作者：
Omar, Ahmad A.